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No. 622,493. Patented Apr. 4, I899. 0. KNIEP.

MACHINE FOR MAKING HEEL CALKS 0N HURSESHOES.

(Application filed Feb. 29, 139s.

(No Model.) 2 Sheets-Sheet I.

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' ii MW No. 622,493. Patented Apr. 4, I899. U. KNIEP.

MACHINE FOR MAKING HEEL GALKS 0N HOBSESHUES.

(Application filed Feb. 28, 1898.) (lo Modal.)

2 Sheets-Sheet 2.

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UNITED STATES PATENT FFICE.

OTTO KNIEP, OF SCHOENEBEOK, GERMANY.

MACHINE FOR MAKING HEEL-CALKS ON HORSESHOESJ SPECIFICATION forming part of Letters Patent No. 622,493, dated April 4, 1899.

Application filed February 28, 1898. Serial No. 672,120. (No model.)

ToaZZ whom it may concern.-

Be it known that I, OTTO KNIEP, a subject of the Kin g of Prussia, German Emperor, residing at Schoenebeck, in the Kingdom of Prussia, Germany, have invented certain new and useful Improvements in Machines for Making IIeeLOalks for Horseshoes, of which the following is a specification.

My invention relates to a machine for making heel-calks on horseshoes by means of which that portion of the shoe which is to be made into a calk receives a double bend, as when made by hand, in order to insure sharp edges;

and it consists in the constructions and combinations of parts as hereinafter described and claimed.

In the accompanying drawings, in which similar parts are represented by similar letters throughout the several views, Figure 1 represents a portion of a horseshoe, showing the shape it assumes at the completion of the first bending operation. Fig. 2 represents the same at the completion of the second bending operation. Fig. 3 represents a portion of the shoe, showing the completed heel-calk. Fig. 4. is a side elevation, partly in section, of the complete machine, parts being broken away. Fig. 5 represents a portion of the horseshoe, showing how it appears when bent by hand. Fig. 6 is a longitudinal section of the machine on the line 6 6 of Fig. 4. Fig. 7 is a side elevation of the machine, parts be ing broken away, showing the stamps in a different position from that shown in Fig. 4:. Fig. 8 is a cross section taken onthe line 8 8 of Fig. 4.

To effect the double bending, the shank of the shoe is clamped at a certain distance from the end, while the end itself is entered into a fixed part of the machine in such a mannor that between the fixed part and the clamps cult to perform these manipulations by hand,

so that smiths usually made not square calks, but only hooks, as shown in Fig. 5, and as the latter were generally left pretty high horses provided with such shoes often slipped or became lame. It also was of frequent occur rence that owing to the lack of skill of the smiths the calk end of the shoe was bent back and forth several times, thereby weakening and making it probable that accidents would occur. All of these objections are overcome by the use of the machine shown in the drawings, in which- A represents the frame of the machine, provided with the base A. Extending across the machine and forming a stationary part th ereof is the plate 9. To this plate is adjustably secured the jaw or matrix 0 by a set-screw 1), one end of which is swiveled in the matrix 0, while the shank is screw-threaded to engage the threads in the plate g, through which it passes. In this way the matrix may be adjusted horizontally with regard to the plate g and when so adjusted is clamped in position by the screws 19'. The matrix 0 rests upon the bed or base of the machine, as shown.

Rigidly secured to the plate 9 is the fixed jaw d, being located just beyond one end of the matrix and near one side of the machine, leaving between it and the matrix the space d This fixed jaw 01 is provided with a groove d, into which one end of the shoe-shank extends, as hereinafter more fully described.

The machine is provided with the movable jaw b and stamps e and f. The stamp e is located in the space d between the jaw 01 and matrix and has a vertical movement in said space imparted to it by the rod 1, secured to the stamp near its lower end between the lugs 6 and secured at its upper end to an eccentric Z, mounted on the shaft or, which latter is journaled, as at n, in the upper portion of the frame A. This stamp c is provided with a crown e and oblique upper edge e and also rod b is bifurcated, as at w, and there provided with the roller 1', mounted between the bifurcations and engaging an eccentric disk or cam h on the shaft 02. The rollert'is kept in contact with the cam by the spring is. The shaft n is driven by the gear-wheel 0, which receives its motion from the gear 0, mounted on the shaft n According to my invention the shank a, on which the calk is to be formed, is placed while hot upon the adjustable matrix 0. At the same time one end of the shank extends into the groove d in the fixed jaw d. The portion of the shank between the matrix 0 and jaw d is freethat is, it spans the recess separating the jaw and matrix. The shank having been placed in position on the matrix is first pressed downward upon the matrix and held securely thereupon by the movable jaw 12. The first bending operation is accomplished by an upward blow being delivered against the free portion of the shank between the matrix 0 and jaw d by the stamp e. The crown e of the stamp e, striking the shank, as stated, causes it to bend, as shown in Fig. 1, but as the stamp continues on its upward movement the curvature of the shank becomes so great that the end thereof slips out of the groove (1. The stamp c then continues on its upward movement, bending the shank upward and back until it assumes the shape shown in Fig. 2, the edge I) of the movable jaw b constituting the turning-point. The crown e of the stamp or oblique edge e of the same then passes up above the upturned end of the shank, and a second stamp f comes into play and worksin a direction opposite to that of stamp e and fits accurately between the stamp e and the movable jawb. The upturned portionof the shank being held securely between the jaw 12 and stamp e, the stamp f delivering its blow upon the top of the hot upturned portion of the shank upsets it and causes it to assume its final shape, as shown in Figs. 1 and 7. Sidewise slipping of the shank in the matrix is prevented by the plate g, which extends above the top of the matrix, and also by the lap e of the stamp c,

and as the matrix is made adjustable no interchanging of the same is required. The jaw 19 is depressed by means of the eccentric disk or cam h, and thus the shank of the horseshoe is clamped. As soon as the eccentric disk h recedes from the fork 00 and releases its pressure thereupon, the fork and the jaw 19 are raised by spring to theirnormal position. The horseshoe-shank is held clamped by the action of the eccentric disk h and jaw 19 until the manipulations necessary to form the calk are completed.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is'

1. In a machine for making heel-calks for same; a shaft; a cam mounted on said shaft;

a roller carried by one end of said arm and engaging the periphery of said cam,the said movable jaw being thereby adapted to clamp-the shank down on said matrix; a movable stamp adapted to strike the shank where it crosses the space between said matrix and said stationary jaw; an eccentric mounted on the aforesaid shaft and connected with and actuating said movable stamp; a second movable jaw; a second movable stamp working between the movable jaw and the aforesaid stamp and arranged to strike the upturned end of the shank between the said stamp and jaw and upset the same, and means for driving said shaft, substantially as described.

2. In a machine for making heel-calks for horseshoes, the combination with the frame of the machine of a matrix adjustably secured thereto, a stationary jaw separated from said matrix by a recess, said stationary jaw having a recess arranged to receive one end of the shoe-shank While the body of the shank rests upon said matrix and spans the recess between said matrix and said jaw; a movable jaw; an arm secured to said movable jaw; a spring mounted 011 said arm and normally exertingapressure on said arm away from said matrix; a roller carried at one end of said arm; a cam adapted to actuate said arm and having its periphery normally in contact with said roller; a shaft carryingsaid cam and means for drivingsaid shaft; amov- 'able flanged stamp arranged to strike the shank where it crossess the spacebetween said matrix and said stationary jaw; an eccentric mounted fast on said shaft and an arm connecting said eccentric with said movable stamp and actuating the same; a sec 0nd movable stamp working between the movable jaw and the aforesaid stamp and arranged to strike the upturned end of the shank between said stamp and jaw and upset the same; a second eccentric mounted on said shaft, provided with an arm connected with the said second movable stamp whereby the said stamp is operated, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.-

OTTO KN IEP.

Witnesses:

HEINRICH BEOMEN, PAUL MI'J'LLER. 

